三年級數(shù)學簡便運算

1、三年級數(shù)學簡便運算(1)284+(591+716) (2)153+178+122+547(3)(141+229)+(371+659+1048)(4)926348152 (5)1584627373+416(6)1276(276+339) (7)4628(1628794)(8)526+498 (9)803+488(10)938299 (11)836402(12)635+327+125+(363+240)(13)9999+999+99+9+6(14)32+34+36+38+40+42+44+46+48(15)(1347258)(347+742)(16)3560(474440)526（17）12345

2、+23451+34512+45123+51234(18)5+10+15+20+95（19）5+6+7+8+103+104（20）（2+4+6+100）（1+3+5+99）四年級數(shù)學簡便運（1）（7861）39 （2）7008218（3）348163242410537（4）125474725 （5）201316（6）37420522695 （7）3000999（8）997721 （9）8747087053（10）（555555555）125（11）125（840）25 (12）994999（13）264974264 （14）454999999545（15）9999366666332（16）124

3、386512476110767（17）624445518（18）3400623438203814（19）199219911991-199119901990（20（246100）-（13599） 小數(shù)簡便運算練習4.8+8.63+5.2+0.37 5.93+0.19+2.81 1.76+0.195+3.24 2.35+1.713+0.287+7.65 1.57+0.245+7.43 6.02+3.6+1.980.134+2.66+0.866 1.27+3.9+0.73+16.1 7.54.96.5 3.070.381.62 1.293.72.716.3 82.451.553.251.790.59

4、1.75 23.40.813.47.2 0.324033.20.364.81.64 1.233.40.236.6 0.253612.7（3.70.84） 36.541.764.54 0.250.7347.60.80.27.6 0.85199 0.258.54 1.288.60.728.6 12.50.960.8 10.49.60.350.8（4.31.25） 3.123.1299 28.610128.6（4.236.17）0.8 0.8615.70.8614.7 2.4102147.322.68 2.648.677.3611.33 2.311.20.5（2.50.25）0.4 9.161.50

5、.59.16 3.63.60.54.51.8 4.23.5 9300.65 63.42.50.4 4.91.4 3.9（1.35） （7.71.54）0.7 2.52.4 2.745 0.351.2520.8 32.40.90.132.4 150.25 7028 15（0.150.4） 4.252.59.90.17人教版六年級數(shù)學簡算.計算題4/93= 51/3 = 1/21/3 = 21/2542= 4/53/4 = 8.70.2= 40.25= 1/714= 2/35/6= 1.258= 3/55/8= 6/73/2= 68.8= 4/114= 4/93/8= 5/35= 08/3= 4/

6、72/3= 2/72 41/124= 43/16= 129/4= 75/8 5= 1216/9 2/33 89/4 5/33/5 4/55/8 7/99/7 2.643.6= 2.450= 350070= 2050298= 279= 0.33%= 286+198 314-202 526+301 223-99 1/23/5 1. 89100= 0.82+0.08= 731= 0.6310= 410= 171000= 0.56+0.4= 1.25100= 5.6+99= 4363/21 10025= 1-0.93= 90-0.9= 18.31/3 794198= 6825= 43.3-63/21

7、72125= 3001-1998 23/55/6 20/312 1/2-1/6 30.254/5 5/6-1/2 1/21/5 4.254/254 57.26(5.261.5) 106.25+3.852.125+3.875 11.9245621 5/1142.75 13.375+5.75+2.25+6.625 （15.19036）18 163.85.25+14.5 172.14.3+5.72.1 19.10245-328 2.83.1+16/8 23(50-12.5) 2.5 242/51/3 25.611047+639 3.52.7-52.2/18 281/71/5 3.3750.97+0.

8、976.625 6.54+2.4+3.46+0.6 95.61.8+95.68.2 35.6420/124 344/3.6-5.40.25 16/2+30/2+90/6 5000-10534 0.15/0.25+0.751.2 41(1/2+1/3+1/4)0.24 42(25+4)4 363/2184 0.81/0.25+5.965 4031327 46.1.54.20.750.25 3.274 +3.275.7 （1.2+ 1.8）4.5102576832 0.25800.450.9 50.102576832 81.21173= 6696626.510.6 = 2/73/9 2/7 = 6

9、756193207= 973603360=4/93= 51/3 = 1/21/3 = 2/73/9 2/7 = 21/2542= 4/53/4 = 8.70.2= 40.25= 1/714= 2/35/6= 1.258= 3/55/8= 6/73/2= 68.8= 4/114= 4/93/8= 5/35= 08/3= 4/7 2/3= 2/72 41/124= 43/16= 129/4 = 75/8 5= 1216/9 2/33 89/4 5/33/5 4/55/8 7/99/7 2.643.6= 2.450= 350070= 2050298= 279= 0.33%= 81.21173= 66

10、96626.510.6 = 1. 89100= 0.82+0.08= 731= 0.6310= 410= 171000= 0.56+0.4= 1.25100= 5.6+99= 10025= 1-0.93= 90-0.9= 794198= 6825= 6756193207= 72125= 973603360=一、簡算。 1.1035-998 2.5076993.3008449 4.4282545.328-189-28 6.43.2-（3.2-1.28）17.2521.2545818.840.25164二、改錯，下面各題錯在哪里，請改正。 2.5731-（731-525）=5731-731-525

11、=5000-525=4475答案僅供參考：二、略（1）888+999 （2）58-92+42-8 （3）（88*125+125*12）*8 （4）816-2304/72+8*3 （5）3306*51/7（6）659-348/2（7）13-(2.65+3/7)（8）12*28/7（9）(7/10)/3+(3/10)/(1/3) （10）0.007+0.993X4X5X1.8（11）(522+643*521)/(522*643-121)（12）341*99+314*1（13）0.56+0.41. 33333*6*11111+22222=(199998+2)*11111=200000*11111=2222200000 2. 1/2 +1/6 + 1/12 + 1/20 + 1/30 + 1/42 + 1/56 =1-1/